Your friends may matter more than your genes. Research from the Framingham study shows that people are more likely to be overweight if their friends are overweight than if their family is. If your brother or sister is overweight, your risk goes up. But if your friends are overweight, your risk increases even more. That has nothing to do with genetics. It means your social connections shape your behavior, your habits, and ultimately your health. You tend to mirror the people closest to you, how t